ADU Company in San Antonio Heights, CA
Kitchen remodeling in San Antonio Heights means working with mid-century and custom homes on terraced foothill lots where the afternoon sun is strong and the county’s unincorporated rules, not Upland’s, govern what you can build. We’re Fullerton ADU Builders, and while ADUs are our core trade, we also remodel kitchens and bathrooms for the same homeowners who own these generous, often sloped properties. If you’re planning a kitchen update or an ADU, call (877) 801-4497 for a free estimate and a straight answer about what your lot will actually allow.
Why San Antonio Heights Homes Are Different
San Antonio Heights sits above the San Gabriel Valley floor, and that elevation changes the work. Summer days run hotter and drier than down in Upland or Claremont, with strong afternoon sun hitting west-facing walls hard. Santa Ana winds arrive in fall and push against openings, fences, and anything not anchored properly. For kitchens, that means ventilation choices, window placement, and even cabinet finishes get more scrutiny than they would in a valley tract home. For ADUs, it means fire-resistant cladding and wind-aware detailing stop being optional upgrades.
The housing stock is the other factor. Most homes here were built from the 1950s through the 1980s as custom or semi-custom builds on large lots that step up the foothill terraces. Mature citrus and oak trees are common, and many properties still run on older utility layouts or septic systems. A kitchen in one of these homes rarely has a simple rectangular footprint. We work around load-bearing walls that don’t match modern framing assumptions, and we plan ADU siting around slopes, retaining walls, and existing detached garages that can sometimes convert instead of building new.
San Antonio Heights is unincorporated San Bernardino County land. That single fact shapes every project more than any design trend. Plans go through San Bernardino County Land Use Services, county setbacks apply, and hillside grading review often becomes the real gatekeeper on sloped lots. A homeowner who hears about an Upland ADU approval next door may not realize that neighbor’s city rules never applied here.
Our Main San Antonio Heights Services
Two services dominate the calls we get from San Antonio Heights homeowners: detached ADUs on sloped back lots, and bathroom remodels in homes where the original layout has served for forty or fifty years.
ADU Builders in San Antonio Heights
A detached ADU is often the only workable build on these foothill lots, where the slope rules out an attached addition and the existing garage is too far from the main house for a conversion to make sense. But a detached unit on a terrace lot brings retaining walls, grading, drainage, and county hillside setbacks into the design before anyone talks floor plans. We’ve served San Antonio Heights since 2017 and work with both site-built and prefab ADU pathways so the recommendation matches your lot, not our inventory. ADU Builders in San Antonio Heights
Bathroom Remodeling in San Antonio Heights
Bathrooms in San Antonio Heights homes often sit in odd corners of semi-custom floor plans, with plumbing walls that were framed around a 1960s fixture layout. When we remodel, we’re usually fixing more than tile: uneven subfloors, undersized venting, and window openings that face that strong western sun. We handle the full scope, from a guest bath refresh to a primary bath reconfiguration, under the same contractor relationship as your ADU. Bathroom Remodeling in San Antonio Heights
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Kitchen Remodeling in San Antonio Heights
Kitchen remodeling in San Antonio Heights usually means updating a 1960s to 1980s original kitchen inside a custom or semi-custom foothill home where nothing is square and the county’s building rules, not a city’s, apply to structural changes. The heat and sun exposure here means appliance ventilation, window glazing, and finish durability matter more than they would in a valley tract house. We handle kitchens as a full remodel scope, and we bundle them naturally with ADU work when you want one contractor for both. You can read more about the overall service on our Kitchen Remodeling page.
Full Kitchen Remodel
Signs you need it
The layout forces you to cook around a peninsula or island that blocks the work triangle, and the cabinet boxes are original to the home’s mid-century build.
What it costs in San Antonio Heights
A full kitchen remodel in San Antonio Heights typically runs $35,000 to $85,000 depending on scope, structural changes, and finish level.
How we do it
We open the plan, reroute plumbing and electrical to match a functional work zone, then install new cabinetry, counters, appliances, and ventilation sized for a foothill kitchen that sees real heat and use.
Kitchen Cabinet Replacement
Signs you need it
Drawer slides are failing, door hinges sag, and the cabinet boxes are water-damaged or so custom-sized that off-the-shelf refacing won’t work.
What it costs in San Antonio Heights
Cabinet replacement in San Antonio Heights typically runs $12,000 to $30,000 depending on linear feet, materials, and whether we’re matching an existing layout or changing it.
How we do it
We measure the existing footprint, pull the old boxes, address any wall or floor unevenness, then install new cabinets on a true line so doors and drawers close cleanly.
Countertop Replacement
Signs you need it
The existing counter is chipped, burned, or laminate that’s delaminating around the sink, and it won’t survive another decade of foothill heat and sun.
What it costs in San Antonio Heights
Countertop replacement in San Antonio Heights typically runs $4,000 to $12,000 depending on material, square footage, and edge fabrication.
How we do it
We template the slab on site, cut for sinks and fixtures, then install and seal the stone or quartz so seams and overhangs perform through temperature swings.
What Kitchen Remodeling Costs in San Antonio Heights
| Item | Typical range in San Antonio Heights |
|---|---|
| Full kitchen remodel | $35,000 – $85,000 |
| Cabinet replacement | $12,000 – $30,000 |
| Countertop replacement | $4,000 – $12,000 |
How long does a full kitchen remodel take in San Antonio Heights?
Most full kitchen remodels here take 8 to 12 weeks. County inspections and any structural corrections on older foothill homes can add time, but we set the schedule around those realities from day one. Call (877) 801-4497 for a timeline tied to your actual scope.
Will the price change once work starts on a San Antonio Heights kitchen?
It shouldn’t. We write line-item quotes and fix the price before demo begins. If we open a wall and find a problem we couldn’t see, we stop and show you exactly what changed and what it costs before moving. Call (877) 801-4497 to talk through it.
Brands We Service in San Antonio Heights
We work across the prefab spectrum, from Tuff Shed and Abodu to Cover, and we specify James Hardie fiber cement on exteriors where fire and moisture resistance actually matter on the wildland edge. Parts availability and lead times vary by manufacturer, but our familiarity with each helps us keep turnaround realistic for San Antonio Heights projects. See our brands for the full range.
Pricing for ADU Company in San Antonio Heights, CA
| Service | Typical range in San Antonio Heights |
|---|---|
| Full kitchen remodel | $35,000 – $85,000 |
| Kitchen cabinet replacement | $12,000 – $30,000 |
| Kitchen countertop replacement | $4,000 – $12,000 |
| Detached ADU (site-built) | $250 – $450 per sq ft |
| Prefab ADU (turnkey) | $150,000 – $400,000 |
| Garage conversion ADU | $80,000 – $150,000 |
| Bathroom remodel | $15,000 – $40,000 |
Hillside grading, retaining walls, and county-mandated improvements push prices toward the top of these ranges faster in San Antonio Heights than on flat valley lots. Our quotes are line-itemed and fixed before work starts, so a change order only happens if you add scope and approve the number first.
Neighborhoods We Serve in San Antonio Heights
We cover all of San Antonio Heights, 91784, and the foothill neighborhoods that step up from Euclid Avenue toward the wildland edge. Response time for estimates is usually within a few business days across the area, though we schedule site visits around your availability rather than promising same-day slots.
- Euclid Avenue foothill corridor
- North San Antonio Avenue terraces
- 23rd Street hillside lots
- Mountain Avenue view properties
- Cucamonga Canyon edge parcels
Service Area – Cities Near San Antonio Heights
We also work in Upland, CA, Claremont, CA, Rancho Cucamonga, CA, and Montclair, CA. Each city has its own permitting path, but the same brand-agnostic ADU guidance and kitchen and bath remodeling scope applies.
Serving San Antonio Heights, CA — Our Local Coverage Area
We’re based in the San Antonio Heights area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About ADU Company in San Antonio Heights
We schedule free estimates across San Antonio Heights within a few business days. We’re based in Fullerton, so the drive up the 210 or through the foothill routes is routine for us. Call (877) 801-4497 and we’ll set a time that works around your schedule.
Yes. San Antonio Heights is unincorporated San Bernardino County land, so plans go through San Bernardino County Land Use Services, not the city of Upland. Hillside grading review often applies on sloped lots, which is why we don’t quote an ADU until we’ve looked at the actual terrain and setbacks.
We can. That’s one of the reasons homeowners bring us in: one contractor for the kitchen, the bath, and the ADU means one schedule, one point of contact, and no finger-pointing between trades. Call (877) 801-4497 to talk through a combined scope.
What happens when you call
- 1A real person answersNo phone trees — talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Antonio Heights Customers Say
"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Erin Ziegler"Garage conversion to a one bedroom unit. He handled the plans, the city submittal, and every round of corrections. Took six months from first meeting to final inspection and he never once made the permit process my problem."
— Tim Padgett"The kitchenette layout he suggested made better use of the space than the one on our original sketch."
— Marisol Guzman